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wear pattern

wear period

web

esophageal w. A group of thin membranous structures that include mucosal and submucosal coats across the esophagus. They may be congenital or may follow trauma, inflammation, or ulceration of the esophagus. SEE: Plummer-Vinson syndrome.

Weber test

[Friedrich Eugen Weber, Ger. otologist, 1823–1891] A test for unilateral deafness. A vibrating tuning fork held against the midline of the top of the head is perceived as being so located by those with equal hearing ability in the ears; to persons with unilateral conductive-type deafness, the sound will be perceived as being more pronounced on the diseased side; in persons with unilateral nerve-type deafness, the sound will be perceived as being louder in the good ear. SEE: hearing.